Have the following for sale:
F250F100 - 250 kHz cf, 8.8khz bw, Collins p/n 526 9410 00. $25
R390A filter F455N80, p/n 526 9161 009, cf 455khz, 7.8 kHz bw. $35 SOLD
P/N 526 9606 030. Found p/n 526 9606 010/020 in Collins catalog which are 455khz cf, lsb, 1.7khz bw. $25
These have not been tested but I will guarantee with a refund within 30 days. JPEG on request. Shipping extra. Email
ralfowler@att.net.